diff --git a/common/djangoapps/terrain/stubs/tests/test_xqueue_stub.py b/common/djangoapps/terrain/stubs/tests/test_xqueue_stub.py
index a7d82c083f..4187cbfb80 100644
--- a/common/djangoapps/terrain/stubs/tests/test_xqueue_stub.py
+++ b/common/djangoapps/terrain/stubs/tests/test_xqueue_stub.py
@@ -115,19 +115,6 @@ class StubXQueueServiceTest(unittest.TestCase):
             self.assertFalse(self.post.called)
             self.assertTrue(logger.error.called)
 
-    def test_register_submission_url(self):
-        # Configure the XQueue stub to notify another service
-        # when it receives a submission.
-        register_url = 'http://127.0.0.1:8000/register_submission'
-        self.server.config['register_submission_url'] = register_url
-
-        callback_url = 'http://127.0.0.1:8000/test_callback'
-        submission = json.dumps({'grader_payload': 'test payload'})
-        self._post_submission(callback_url, 'test_queuekey', 'test_queue', submission)
-
-        # Check that a notification was sent
-        self.post.assert_any_call(register_url, data={'grader_payload': u'test payload'})
-
     def _post_submission(self, callback_url, lms_key, queue_name, xqueue_body):
         """
         Post a submission to the stub XQueue implementation.
diff --git a/common/djangoapps/terrain/stubs/xqueue.py b/common/djangoapps/terrain/stubs/xqueue.py
index ad66ce2ba3..0f128fba65 100644
--- a/common/djangoapps/terrain/stubs/xqueue.py
+++ b/common/djangoapps/terrain/stubs/xqueue.py
@@ -39,7 +39,8 @@ class StubXQueueHandler(StubHttpRequestHandler):
         if self._is_grade_request():
 
             # If configured, send the grader payload to other services.
-            self._register_submission(self.post_dict['xqueue_body'])
+            # TODO TNL-3906
+            # self._register_submission(self.post_dict['xqueue_body'])
 
             try:
                 xqueue_header = json.loads(self.post_dict['xqueue_header'])